[PATCH v2 02/11] dt-bindings: net: add phy-supply property for stm32

[Christophe ROULLIER]

Hi

On 4/26/24 17:30, Rob Herring wrote:
> On Fri, Apr 26, 2024 at 02:56:58PM +0200, Christophe Roullier wrote:
>> Phandle to a regulator that provides power to the PHY. This
>> regulator will be managed during the PHY power on/off sequence.
>>
>> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
>> Signed-off-by: Christophe Roullier <christophe.roullier at foss.st.com>
>> ---
>>   Documentation/devicetree/bindings/net/stm32-dwmac.yaml | 3 +++
>>   1 file changed, 3 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
>> index b901a432dfa9..7c3aa181abcb 100644
>> --- a/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
>> +++ b/Documentation/devicetree/bindings/net/stm32-dwmac.yaml
>> @@ -84,6 +84,9 @@ properties:
>>             - description: offset of the control register
>>             - description: field to set mask in register
>>   
>> +  phy-supply:
>> +    description: PHY regulator
> This is for which PHY? The serdes phy or ethernet phy? This only makes
> sense here if the phy is part of the MAC. Otherwise, it belongs in the
> phy node.
>
> Rob

You are right, normally it should be managed in Ethernet PHY (Realtek, 
Microchip etc...)

Lots of glue manage this like this. Does it forbidden now ? if yes need 
to update PHY driver to manage this property.